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US Patent: 440,564
Pipe Wrench
Patentee:
Glen W. Hammond (exact or similar names) - Wellsborough, PA

USPTO Classifications:
81/186, 81/98

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Alex Scott
Henry Sherwood
E. H. Owlett
Jas. W. Graham
Patent Dates:
Applied: Jul. 20, 1888
Granted: Nov. 11, 1890

Patent Pictures:
Glen W. Hammond patent November 11, 1890
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Description:
Self-adjusting pipe wrench; the edges of the jaw surface are rounded.

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